The Agilent U1250A Series is a handheld digital multimeter line comprising the U1251A and U1252A, delivering 4.5-digit resolution with a 50,000-count full-scale dual display and high-contrast blue backlighting. Both models take accurate true-RMS readings and reach a basic DC voltage accuracy of up to 0.025%, giving the flexibility to perform quick validation measurements as well as tolerance checks and marginal-failure troubleshooting. Beyond conventional multimeter functions, the series integrates capabilities normally associated with a benchtop instrument into a single rugged handheld package.

Marketed as a 4-in-1 instrument for today's challenging maintenance environment, the series combines a full-featured digital multimeter with a frequency counter, a programmable square wave generator for stimulation of electronic digital circuits, and a thermometer function. Rated at CAT III 1000 V (IEC 61010 compliant), the meters allow measurements on building electrical installations at locations between the main circuit breaker and the mains socket-outlets, including measurements on equipment that is permanently connected to the main circuits. Accurate true-RMS measurement together with sophisticated math functions helps increase confidence in fault findings and further reduce measurement errors.

ValueTronics stocks and holds its own inventory in a secure, 20,000-square-foot warehouse at 1675 Cambridge Drive in Elgin, Illinois, which means the instruments we list are physically on hand and ready to ship. Our test-and-measurement specialists inspect and functionally verify every pre-owned unit in-house before it leaves the building, while new units ship factory-sealed exactly as received from the manufacturer.

Brand Heritage

Agilent Technologies was established in 1999 as a spin-off of Hewlett-Packard's test-and-measurement business. In 2014, that electronic measurement business was established as Keysight Technologies, which carries the product lineage forward today.

Compare Other Models in This Series

The Agilent U1250A Series brings benchtop-class capability into a handheld form factor, pairing a 50,000-count, 4.5-digit dual display with true-RMS measurement and a basic DC voltage accuracy reaching 0.025%. The series is built around a 4-in-1 concept that adds a frequency counter, a programmable square wave generator, and a thermometer function to a full-featured digital multimeter.

Across the line, the meters share a rugged shock-absorbing overmold, CAT III 1000 V overvoltage protection, a –20 °C to +55 °C operating range, and a 3-year warranty, while differing in measurement accuracy and the specific function set offered on each model. The comparison table below details those differences model by model.

Each pre-owned model linked below is its own dedicated product page with condition-matched pricing, so you can select the exact model and condition your application requires. Review the per-model specifications and the comparison table to confirm the right fit before ordering.

The two models in the series differ in both precision and feature set. The U1252A reaches a basic DC voltage accuracy of 0.025%, while the U1251A is specified at 0.03%, and the U1252A extends true-RMS AC bandwidth to 100 kHz against the U1251A's 30 kHz range. J-type thermocouple support is available on the U1252A in addition to the K-type support shared by both models.

The U1252A additionally provides a programmable square wave generator output, a dedicated frequency counter with divide-by-1 and divide-by-100 modes, AC+DC measurement specifications, and a rechargeable Ni-MH battery with built-in charging, whereas the U1251A is powered by an alkaline 9 V battery. The comparison table below lists each model's functions side by side.

Additional differences in specifications beyond the few shown above are not listed here — see each model's full specifications below.

Accessories Supplied

• Soft carrying case
• Certificate of Calibration (CoC)
• Test Report
• Test leads
• Alligator clips
• SMT grabbers
• Mini grabber
• Fine tip test probes
• Quick Start Guide
• Reference CD containing the User's and Service Guide, application software and instrument drivers
• Alkaline 9 V Battery (U1251A only)

Product Core & Specifications

Important: Current can be measured up to 10 A continuously; an additional 0.5% accuracy applies to signals from 10 A to 20 A for 30 seconds maximum, and after measuring a current above 10 A the meter should be left to cool for twice the measuring time used.

Important: Measurement category derates with altitude: CAT III 1000 V from 0 to 2000 m and CAT III 600 V from 2000 to 3000 m, per IEC 61010-1 2nd Edition.

Important: Always use the NULL function to zero out the thermal effect with open test lead before measuring; if the NULL function is not used, an additional 20 counts must be added to the DC current accuracy.

Recommended pairing: connect to a PC with the optional Agilent U1173A IR-to-USB cable to use the included datalogging software for automatic logging.

About this Pre-Owned unit

This pre-owned unit is inspected and functionally verified in-house before it ships and is backed by our pre-owned warranty. To confirm its exact condition, firmware revision, installed options, or included accessories for your application before ordering, contact our Test Architects.

• Warranty included
• Functional verification included
• Standard Calibration Upgrade Options: No Calibration Required, NIST Traceable, Z540.1 or ISO 17025 with Data, Z540.3 Guardbanding with Data.
• Note that unnecessary accessories may not be included (contact Test Architect to confirm).

ValueTronics supplies both new and used test and measurement equipment. New units ship factory-sealed, exactly as received from the manufacturer; every used unit is inspected and functionally verified in-house at our 20,000 sq ft secure facility in Elgin, Illinois before it ships. Our Test Architects can help you select the condition, calibration, and configuration that fit your application.

Please review the Manufacturer's Data Sheet to verify published specifications. Feedback on this webpage is always welcome — please reach out to your Test Architect at any time for questions or concerns. Thank you, we truly appreciate you being our customer.